[Asterisk-Users] Echo Canceling

[Andrew Kohlsmith]

On Tuesday 04 October 2005 10:37, Tad Heckaman wrote:
> the middle of nowhere). We get slight echo on all calls, and when
> calling some numbers (long distance calls but still in the local
> area), we get very loud echo. The person calling out can hear their
> own voice at the same volume about a half second after they speak. Its

We get that with our Bell Canada PRI only on certain (local) exchanges.  I'm 
not exactly sure what is causing it but it's been a problem since we 
installed the PRI.

> Would switching to Sangoma cards help fix my issues? I know Digium
> cards have issues on some servers/motherboards, and yet I haven't
> heard of any issues with Sangoma cards. If someone has had issues then
> I would like to hear them.

I doubt it, the echo can seems to be working just fine, but in your case (and 
mine) it seems like it must be getting disabled.  I must admit it's been a 
while since I've dove into this problem, but if you execute dmesg -c on the 
asterisk box, make a call that will echo, and execute dmesg -c again, is 
there any mention of "echo canceller disabled on channel 5" in the resultant 
output?

-A.